Cork Underlayment Uses and Applications Cork should be considered when installing electric floor heat under carpet, laminate floors or floating wood floors, as well as some applications where you are setting tile or stone flooring – especially where acoustical impact isolation or crack suppression is needed. Cork is ideal for residential and light commercial applications, and is not recommended for use under self-leveling underlayment(s). Certifications WarmlyYours Cork underlayment system is an excellent insulation choice when electric floor heating is installed under laminate over a concrete slab, and is highly recommended for acoustical impact isolation and crack suppression. • ICBO Evaluation Report No. 5314 • City of Los Angeles Research Report No. RR25323-A Technical Data Cork is durable, lightweight, and is easy to install, and is the ideal solution under our Environ II™ floor heating system. TEST ASTM TEST RESULT Bond Strength C482 Modified PSI of 80 Cork features: Structural Performance C627-88 WITHOUT CBU 1.5 • Economically Priced • Recommended under Environ II™ floor heating system • Creates a thermal break and increases energy efficiency • VOC-free and Environmentally Friendly • Cut in 2’ x 3’ sheets to ensure flat installation (no curling or lifting) • 1/4” (6mm) thick by 24” (61mm) wide by 36” (91mm) long • Limited 10-year warranty With CBU RESIDENTIAL Heavy Flame Spread E84-91a Class “A” Thermal Insulation C177-85 5mm = .72 R value Sound Ratings for AcoustiCORK® Sound Control Underlayment Floor/Ceiling Assemblies WOOD FLOOR JOIST SYSTEM CONCRETE FLOOR SYSTEM Test Reference Subfloor AcoustiCORK Thickness Suspended Ceiling Overlay Floor Covering Sound Ratings IIC STC RAL IN95-11•RAL TL95-118 5/8” Plywood 6mm Yes 1 1/2” Gypsum Concrete Ceramic Tile 57 60 RAL IN95-19•RAL TL95-126 5/8” Plywood 6mm Yes 1 1/2” Gypsum Concrete Parquet Wood 54 59 RAL IN95-15•RAL TL95-122 5/8” Plywood 6mm Yes 1 1/2” Gypsum Concrete Laminate Floor 53 60 RAL IN98-37•RAL TL98-186 5/8” Plywood 6mm Yes 1 1/2” Gypsum Concrete Floating Wood 57 60 RAL IN95-37•RAL TL95-256 6” Slab 6mm Yes None Ceramic Tile 61 60 RAL IN95-43•RAL TL95-366 6” Slab 6mm Yes None Glued Wood 61 62 RAL IN95-42•RAL TL95-365 6” Slab 6mm Yes None Nailed Wood 61 61 RAL IN95-41•RAL TL95-364 6” Slab 6mm Yes None Floating Wood 63 60 RAL IN98-40•RAL TL98-27 6” Slab 6mm No None Floating Wood 50 52 Installation Support • (800) 875-5285 • www.WarmlyYours.com